Connected: An Internet Encyclopedia
RFC 1630

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Network Working Group
Request for Comments: 1630
Category: Informational

T. Berners-Lee
CERN
June 1994

### Universal Resource Identifiers in WWW

A Unifying Syntax for the Expression of Names and Addresses of Objects on the Network as used in the World-Wide Web

### Status of this Memo

This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

### IESG Note:

Note that the work contained in this memo does not describe an Internet standard. An Internet standard for general Resource Identifiers is under development within the IETF.

### Table of Contents

1. Introduction
2. The Need For a Universal Syntax
3. Design Criteria and Choices
4. Recommendations

4.1. URI syntax

4.1.1. Reserved characters
4.1.2. Unsafe characters
4.1.3. Encoding reserved characters
4.1.4. Partial (relative) form
4.1.5. Fragment-id

4.2. Specific Schemes

4.2.1. HTTP
4.2.2. FTP
4.2.3. Gopher
4.2.4. Mailto
4.2.5. News
4.2.6. Telnet, rlogin, tn3270
4.2.7. URN
4.2.8. WAIS
4.2.9. file
4.2.10. Message-Id
4.2.11. Content-Id
4.2.12. Schemes for Further Study
4.2.13. Prospero

4.3. Registration of naming schemes
4.4. BNF of Generic URI Syntax
4.5. BNF for specific URL schemes

References
Security Considerations
Author's Address

Original text document

Next: 1. Introduction

Connected: An Internet Encyclopedia
RFC 1630